Drag Racing With Clutch Type Sure-grip

I would use your clutch suregrip and not worry about it at all. I never broke mine when I was running one, in a 3400lb 440 bracket car. Still using stock axles with slicks, too.
I will admit that I did move up to a dapco locker during the most recent gear change. I'm not gonna put any more money in the 8 3/4. When I make more power, gonna just step up to a dana.